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Hello, VincentCalci! Welcome to Wikipedia! Thank you for your contributions to this free encyclopedia. If you decide that you need help, check out Getting Help below, ask me on [[User talk:Wwheaton (talk) 00:25, 26 March 2010 (UTC)|my talk page]], or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking   or using four tildes (~~~~); this will automatically produce your username and the date. Finally, please do your best to always fill in the edit summary field. Below are some useful links to facilitate your involvement. Happy editing! Wwheaton (talk) 00:25, 26 March 2010 (UTC)Reply
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Hi, I reverted your Schrödinger's Cat edit, which was either an inappropriate joke or just a grammatical misunderstanding. The apostrophe indicates possessives in standard English, if you are not a native speaker; although it can sometimes be used to indicate a conjunction. In this case the possessive is universally understood. Anyhow (either way) welcome to Wikipedia! Wwheaton (talk) 00:25, 26 March 2010 (UTC)Reply